src/soc/decoder/pseudo/pywriter.py

   1 # python code-writer for OpenPOWER ISA pseudo-code parsing
   2
   3 import os
   4 from soc.decoder.pseudo.pagereader import ISA
   5 from soc.decoder.power_pseudo import convert_to_python
   6
   7 def get_isasrc_dir():
   8     fdir = os.path.abspath(os.path.dirname(__file__))
   9     fdir = os.path.split(fdir)[0]
  10     return os.path.join(fdir, "isa")
  11
  12
  13 class PyISAWriter(ISA):
  14     def __init__(self):
  15         ISA.__init__(self)
  16
  17     def write_pysource(self, pagename):
  18         instrs = isa.page[pagename]
  19         isadir = get_isasrc_dir()
  20         fname = os.path.join(isadir, "%s.py" % pagename)
  21         with open(fname, "w") as f:
  22             for page in instrs:
  23                 d = self.instr[page]
  24                 print (fname, d.opcode)
  25                 f.write("def %s():\n" % page.replace(".", "_"))
  26                 pcode = '\n'.join(d.pcode) + '\n'
  27                 print (pcode)
  28                 pycode = convert_to_python(pcode)
  29                 pycode = pycode.split("\n")
  30                 pycode = '\n'.join(map(lambda x: "    %s" % x, pycode))
  31                 f.write("%s\n\n" % pycode)
  32
  33
  34 if __name__ == '__main__':
  35     isa = PyISAWriter()
  36     isa.write_pysource('comparefixed')
  37     isa.write_pysource('fixedarith')